Biopsychology, Department of Psychology, Institute of Cognitive Neuroscience, Ruhr-University Bochum , Bochum , Germany.
Department of Genetics, Faculty of Veterinary Medicine, Ankara University , Ankara , Turkey.
Laterality. 2019 Nov;24(6):647-677. doi: 10.1080/1357650X.2019.1578228. Epub 2019 Feb 10.
Predator-prey relationships have been suggested to be one of the primary evolutionary factors driving the development of functional hemispheric asymmetries. However, lateralization in many predator species is not well understood and existing studies often are statistically underpowered due to small sample sizes and they moreover show conflicting results. Here, we statistically integrated findings on paw preferences in cats and dogs, two predator species within the order that are commonly kept as pets in many societies around the globe. For both species, there were significantly more lateralized than non-lateralized animals. We found that 78% of cats and 68% of dogs showed either left- or right-sided paw preference. Unlike humans, neither dogs nor cats showed a rightward paw preference on the population level. For cats, but not dogs, we found a significant sex difference, with female animals having greater odds of being right-lateralized compared to male animals.
捕食者-猎物关系被认为是驱动功能半球不对称发展的主要进化因素之一。然而，许多捕食者物种的偏侧性尚不清楚，并且由于样本量小，现有研究通常在统计学上没有足够的效力，而且它们的结果也存在冲突。在这里，我们对猫和狗这两种在全球许多社会中通常作为宠物饲养的 目捕食者的爪子偏好进行了统计综合。对于这两个物种，明显有更多的偏侧性动物而非非偏侧性动物。我们发现，78%的猫和 68%的狗表现出左或右侧爪子偏好。与人类不同，狗和猫都没有表现出在种群水平上的右爪偏好。对于猫来说，但不是狗，我们发现了一个显著的性别差异，与雄性动物相比，雌性动物有更大的可能性是右侧偏侧性的。
